working on a 98 ram 2500 v10 will start fine when cold or not ran for 15-20 min repaired the batt cables to the starter replaced the neutral safety switch. replaced the starter running out of ideas any help would be appreciated.

If you are working on the battery cables and neutral safety then are you talking about a no crank condition? What is happening when it won't start? When you turn the key to the start position, what happens when it doesn't start?

starter engages the flywheel and cranks the engine over but the engine won't start?

starter doesn't turn the engine but you hear a click from the starter solenoid?

starter solenoid make a lot of clicking noise?

nothing.... no click, it's like you never turned the key to the start position...